I think there can be something going on inside even if your skin doesn't reflect it, though - I know a girl who has lovely skin, but issues with her hormones and frequent migraines. Maybe skin inflammation is just one of the many manifestations of something not quite right inside?

I have developed dark circles under my eyes when I was suffering from celiac (I did not know at the time). I believe that it comes from your liver not functioning properly. Each time I eat more sugar/junk even gluten free, they are worse. Each time I eat good food, they are lighter. Just my experience.

From what I know, skin reflects your overall health. If there is some inflammation in your body, your skin will show it. Skin is like a diagnostic tool. It helped our ancestors pick the best mates based on their health conditions in my understanding. If your skin is healthy and glowing, there is nothing wrong with you.

Skin is NOT THE ONLY way to tell whether something is going on with your health. I was one of those lucky people who always had clear skin, even when I was very very sick.

I was losing hair and my nails became brittle, but I had flawless skin - I very very rarely had breakouts! The only time I actually started to have breakouts is when I went Paleo. It is NOT BECAUSE of Paleo, but because my autoimmune system was not functioning well at the time. So, even though I felt much better on Paleo, I still developed break-outs which I believe were correlated with my liver and intestinal health.

I think there can be something going on inside even if your skin doesn't reflect it, though - I know a girl who has lovely skin, but issues with her hormones and frequent migraines. Maybe skin inflammation is just one of the many manifestations of something not quite right inside?